public Server(int port) {
enc = null;
dec = null;
char[] password = null;
char[] passwordcopy = null;
try {
password = PrivateKeyHandler.checkPassword(GenerateKeys.getPasswordInput());
if (password == null) {
System.err.println("Please enter admin password to start the server");
System.exit(1);
}
passwordcopy = Arrays.copyOf(password, password.length);
this.network = new ServerNetworkWrapper(port, password);
dec = LoginManager.load(password);
enc = LoginManager.save(passwordcopy);
} finally {
if (password != null) {
for (int i = 0; i < password.length; i++) {
password[i] = '\0';
passwordcopy[i] = '\0';
}
}
} // In-case LoginManager.load isn't reached
challengeHanlder = new ChallengeHandler();
}
private void addCourse() {
JTextField pf = new JTextField();
int okCxl =
JOptionPane.showConfirmDialog(
null, pf, "Enter Course Name", JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
String courseName = null;
if (okCxl == JOptionPane.OK_OPTION) {
courseName = new String(pf.getText());
} else {
return;
}
JComboBox<Person> profList = new JComboBox<Person>();
profList.addItem(null);
for (Person p : LoginManager.getPersons()) {
profList.addItem(p);
}
okCxl =
JOptionPane.showConfirmDialog(
null,
profList,
"Select Professor",
JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE);
Person prof = null;
if (okCxl == JOptionPane.OK_OPTION) {
prof = (Person) profList.getSelectedItem();
} else {
return;
}
Course c = new Course(courseName, prof);
char[] password = null;
try {
password =
PrivateKeyHandler.checkPassword(
GenerateKeys.getPasswordInput()); // This window shows garbage
if (password == null) {
System.err.println("Please enter admin password to apply changes");
return;
}
LoginManager.putCourse(c.getCID(), c);
enc = LoginManager.save(password);
} finally {
if (password != null) {
for (int i = 0; i < password.length; i++) {
password[i] = '\0';
}
}
}
}
private void apply() {
String action = (String) StatusList.getSelectedItem();
Person p = (Person) PersonList.getSelectedItem();
Course c = (Course) CourseList.getSelectedItem();
if (!checkValidAction(action, p, c)) {
System.err.println("Invalid action... Ignoring...");
return;
}
StatusList.setSelectedIndex(0);
PersonList.setSelectedIndex(0);
CourseList.setSelectedIndex(0);
char[] password = null;
try {
password =
PrivateKeyHandler.checkPassword(
GenerateKeys.getPasswordInput()); // This window shows garbage
if (password == null) {
System.err.println("Please enter admin password to apply changes");
return;
}
if (action == STUDENT) {
LoginManager.setStudent(p.getPID(), c.getCID());
} else if (action == TA) {
LoginManager.setTA(p.getPID(), c.getCID());
} else if (action == PROF) {
LoginManager.setProf(p.getPID(), c.getCID());
} else if (action == REMOVE) {
LoginManager.remove(p.getPID(), c.getCID());
} else if (action == REMOVEPERSON) {
LoginManager.remove(p.getPID());
} else if (action == REMOVECOURSE) {
LoginManager.removeCourse(c.getCID());
} else if (action == EDITCOURSE) {
JTextField pf = new JTextField();
int okCxl =
JOptionPane.showConfirmDialog(
null,
pf,
"Change Course name to",
JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE);
String courseName = null;
if (okCxl == JOptionPane.OK_OPTION) {
courseName = new String(pf.getText());
} else {
return;
}
LoginManager.changeCoursename(c.getCID(), courseName);
} else if (action == EDITUSERNAME) {
JTextField pf = new JTextField();
int okCxl =
JOptionPane.showConfirmDialog(
null,
pf,
"Change username to",
JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE);
String username = null;
if (okCxl == JOptionPane.OK_OPTION) {
username = new String(pf.getText());
} else {
return;
}
LoginManager.changeUsername(p.getPID(), username);
}
enc = LoginManager.save(password);
} finally {
if (password != null) {
for (int i = 0; i < password.length; i++) {
password[i] = '\0';
}
}
}
}